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百分数与分数的意义有相同之处,也有不同之处,学生学习百分数的意义时,极易与分数的意义相混淆,教学中需注意如下几点: 一、运用实例,抽象概括,突出本质属性。教学百分数的意义不宜从复习分数的意义入手,这样会使学生头脑中本来已经十分深刻的分数意义,进一步的强化,从而产生消极的思维定势,干扰学生对百分数意义的理解和掌握。而应从实例出发,让学生用多种方法解答。如:五年级100个学生
There are similarities and differences between the meaning of percentage and the score. When students learn the meaning of percentage, they are easily confused with the meaning of the score. The following points should be paid attention to in teaching: First, the use of examples, abstraction, highlighting the essential attributes . The significance of the percentage of teaching should not start from the significance of review scores, so that students will have a very profound meaning in the mind, further strengthening, resulting in negative thinking set to interfere with the understanding and mastery of the meaning of the percentage. Instead, we should start from an example and ask students to answer in many ways. Such as: fifth grade 100 students